Respiratory infection (snuffles) in rabbits

What is snuffles?

'Snuffles' is the collective term for upper respiratory tract infections in rabbits. The most frequently isolated pathogen is Pasteurella multocida, but Bordetella bronchiseptica, Staphylococcus spp. and Pseudomonas spp. also play a role [1][4]. Important: non-infectious causes such as allergy or a tumour must be ruled out first before treatment is started [1].

The disease course varies greatly. Early stages present with watery nasal discharge and sneezing; if untreated or if conditions deteriorate, the infection can spread to the lungs, the middle ear (resulting in head tilt), the skin (abscesses) or the blood (sepsis with sudden death) [1][4].

Carrier state

A striking feature of P. multocida: in established colonies, 30–90 % of clinically healthy rabbits are asymptomatic carriers [1]. Stress, poor ventilation or immunosuppression due to illness or incorrect nutrition are the most common triggers that convert latent infection into clinical disease. This makes environmental optimisation not a 'soft' measure but a proven component of the approach.

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Conventional treatment

Antibiotics (enrofloxacin, trimethoprim-sulfa, penicillin G) demonstrably reduce clinical symptoms but rarely eradicate the pathogen completely [2][4]. Relapse after stopping the course is common. Growing antibiotic resistance makes this extra relevant: prolonged or repeated antibiotic use without veterinary supervision is unwise [4].

An authorised vaccine for the pet rabbit is not available [3].

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Additional and supportive options

Environmental management — well substantiated

Nasal flushing with physiological saline — limited evidence

Nasal flushing can keep the nasal passage clear and improve comfort. Direct evidence in rabbits is lacking; application is derived from human and small animal practice. Always perform under supervision of a veterinary surgeon to avoid stress and aspiration risk.

Herbs and supplements — insufficient evidence

For products such as echinacea, propolis or vitamin C, no controlled clinical trials are available in rabbits. Laboratory studies sometimes show activity against P. multocida in vitro, but this is not proof of effectiveness in the living animal. Until better evidence is available, these agents cannot replace antibiotic treatment.

Probiotics — insufficient evidence

There is no evidence that probiotics prevent snuffles or shorten the disease duration in rabbits. Specific probiotics can be used to support the gut flora during antibiotic courses, but only in consultation with a veterinary surgeon.

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Zoonotic risk

Clinically cured rabbits frequently remain asymptomatic carriers of P. multocida [3]. Transmission to humans occurs via bite, scratch or inhalation. In contact with children, elderly people or immunocompromised persons, routine screening is recommended [1][3]. Capsular type A has the most documented zoonotic potential.

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Additional ≠ replacement

None of the additional options replaces timely diagnostics and — where necessary — antibiotic treatment by a veterinary surgeon with experience in rabbits. In case of doubt about the diagnosis or if recovery does not occur within 48–72 hours after start of treatment: contact the veterinary surgeon again.